PDF Tools
Merge PDF Files Online
Combine multiple PDF files into one document. Reorder pages and download the merged PDF from your browser.
No uploadReorder filesBrowser tool
Fast PDF merging in the browser
Merge PDF uses pdf-lib to combine multiple PDF documents into a single file. All processing happens locally in your browser, ensuring your documents never leave your device. This approach provides complete privacy and security for sensitive documents.
The tool supports reordering pages before merging, allowing you to create the exact document structure you need. Simply upload your PDFs, arrange them in the desired order, and download the merged result. No account or signup is required.
Download without watermark — download your files watermark-free.
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Frequently Asked Questions
Yes. Use the drag handles or move up/down buttons to arrange PDFs in your preferred order before merging. This gives you complete control over the final page sequence in your merged document.
The tool runs in your browser, so the limit depends on your device's memory. Most computers can handle several hundred megabytes. For very large files, ensure you have sufficient RAM available for smooth processing.
No. Merging happens entirely in your browser, so files never leave your device. This ensures complete privacy and security for your sensitive documents.
You can merge as many PDFs as your browser can handle. There's no artificial limit imposed by the tool. The practical limit depends on your device's available memory.
Yes. The merged PDF maintains the original quality and formatting of your source documents. No compression or quality loss occurs during the merging process.
The tool can merge password-protected PDFs if you have the password and unlock them first. Use our Unlock PDF tool to remove password protection before merging.
Yes. Merge PDF is completely free with no hidden fees, no registration required, and no limits on usage. Merge as many PDFs as you need without any cost.
This tool works in all modern browsers including Chrome, Firefox, Safari, and Edge. As long as JavaScript is enabled, you can use the PDF merge functionality.